Which has a bigger cup — Bach 1½C or Bach 11EW?

The Bach 1½C has a cup diameter of 17.00 mm / 0.6693 in compared to 15.70 mm / 0.6181 in on the Bach 11EW — a difference of 1.30 mm / 0.0512 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 1½C and Bach 11EW?

The Bach 1½C has a medium cup while the Bach 11EW has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 1½C vs Bach 11EW

Name: Bach 11EW
Brand: Bach

The Bach 1½C has a wider cup diameter, the Bach 1½C features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Bach 1½C

• Cornet

Throat diameter3.66 mm / 0.1441 in

Mouthpiece B

Bach 11EW

• Cornet

Throat diameter3.66 mm / 0.1441 in

Best suited for

🎺Lead / commercial — shallow cup for brightness and range

Throat Diameter

Throat diameters are essentially identical at 3.66 mm / 0.1441 in, so resistance feel will be comparable.

Which is better?

Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

Open in interactive tool + Add third mouthpiece Bach 1½C details Bach 11EW details Bach 1½C equivalents Bach 11EW equivalents

Bach 1½C vs Bach 11EW

Throat Diameter

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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